title: Selective self-assembly of surface-functionalized fullerenes in PS-PEO on different substrates.
abstract: Polystyrene-functionalized C60 (C60-PS) was synthesized by atom-transfer radical polymerization. The structure of the hybrid was characterized by gel permeation chromatography and thermal gravimetric analysis. The self-assembly of polystyrene-block-poly(ethylene oxide) (PS-PEO)/C60-PS film in annealing solvents was studied on a silicon wafer and at the air/water interface by transmission electron microscopy. The method is an easy route to produce arrays of ordered nanostructures. The addition of C60-PS has a great effect on the self-assembly of PS-PEO. Treating the film under solvent vapor can modulate the orientation and ordering of PS-PEO microdomains. The C60-PS enhanced the formation of lamellae microstructure, and the C60-PS entered the PS phase, expanding the scale of PS domains. Nevertheless, it becomes more complex when it refers to the self-assembly at the air/water interface under solvent vapor for a long time. The selectivity of solvent to the polymer chains plays an important role as the annealing time increases.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering and College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing, P R China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Guang-Xin
authors.initials: GX
authors.lastname: Chen
authors.forename: Jianli
authors.initials: J
authors.lastname: Sun
authors.forename: Qifang
authors.initials: Q
authors.lastname: Li